所有科技知识-科学时代

科学时代收录了3405121条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

head resonance	headrest	head restraint	head retention	head retract system
head rice	head {rocket}	head rod	Head Rod	head room
headroom	head room clearance	head rope	headrope	head rotor
heads	head sails	head scatter	head screen	heads down
heads-down tribe	head sea	head search controller	head seat	head seat; fore seat
head segment	head selection method	head select signal	head semi-permanent	headset
head set	Headset	headset jack	headset joint bowl assembly	headset microphone
headset receiver	head settling time	head shaft	head shaking	head shape
head sheave	head sheet	head shield	Head shield	Headship rate
head shock wave	head size	head slider	head slot	head smut
heads of department {=HOD}	headspace	head-space concentrating injector	headspace gas	headspace gas chromatography
headspace tester	head-span suspension	Head, specific	head spray	headspring
heads spray cooling	head stack	Head, standard atmospheric	head start	Head Start
Head Start Program	head start program	Head, static	head step settling time	head steward
head stock	headstock	head stock center	headstock cone pulley	head strap
head-strict	head strongback	head stud rack	head style	Head, suction
heads up	heads-up digitizing	head support	head support arm	head support height above seat
head support in front of back support	head switch	head switching	head switching noise	head symbol
head-tail galaxies	head-tail galaxy	Head/Tail Wall Door	head/tail wall door	head/tail wall unit
head tank	Head tax	headteacher	head telephone	head temperature
head terminal	head-to flange circumferential weld	head-to-foot arrangement	head-to-head	head to head
head-to-head addition	head to head structure	head tone	head-to-row test	head-to-tail
head-to-tail polymer	head to tail structure	Head, total	head tracking	Head Tracking
head tracking stereoscopic display	head trackman	head transmission	head trauma	head unloading
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